Yes, a study has found that drinking tea boosts creative brainpower as well as helping to put people in a good mood.

Reporting in the journal Food Quality and Preference, the researchers hailed the study as “a new way to investigate the relationship between food and beverage consumption and the improvement of human cognition.

"Two biological ingredients, caffeine and theanine, have beneficial effects on attention, which is an indispensable part of cognitive function.”